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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Duct through penis that carries sperm and urine






2. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






3. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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4. 283 days






5. (male) pushes the testes upward toward the body for warmth or protection






6. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






7. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






8. 45-60 days after breeding; re-breed as required






9. Way to know everything is alright with the breeding male






10. Milk is 15% ________ and 85% __________.






11. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






12. Can survive ~7 days in cow. vast majority <48 hours






13. 1-3 days






14. 19-23 (21) days






15. Depository for semen during insemination. where urine leaves the body






16. Urinary calculi.






17. 1. brain function - 2. blood flow - 3. willing female






18. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






19. Failure to have both testis (gonads) descend






20. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






21. What helps regulate spermatogenesis?






22. Allows extension of penis without fibro-elastic penis






23. Animals which have only one estrous cycle (ex: dog - fox)






24. Sperm is produced here






25. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






26. Way to know everything is alright with the breeding male






27. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






28. 26 hours after estrus begins






29. Urinary calculi.






30. Why Dairy calves are fed powdered milk.






31. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






32. Help to signal hormone levels which we need both in the brain right next to each other.






33. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






34. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






35. Check feet and legs - look for masculine traits in build such as crest and muscling






36. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






37. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






38. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






39. Failure to have both testis (gonads) descend






40. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






41. Contains and regulates the temp of the testes for sperm production






42. 24 hours before end of estrus cycle






43. FEED






44. Animal which has been castrated after puberty






45. 4-6 days






46. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






47. Animals which have many estrous periods per year (ex: cow - sow)






48. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






49. What makes the milk flow through the mammary glands?






50. 265-285 days